Question juridique clé
Whether the federal public law appeal was admissible against the refusal to renew the residence permit.
Solution extraite
It was inadmissible because no federal or international right to the permit could be relied upon.
Motifs extraits
Once the applicant no longer invoked a marriage-based entitlement, the case fell under Art. 83 lit. c ch. 2 LTF, excluding the ordinary public law appeal.